At work today, I was introduced to DeltaV version 11 with the biggest change yet – electronics marshaling. There is a charm module that handles all of the field devices plug and play from the junction box. Profound changes but nobody knows the reliability of this thing yet.

Plugs in a field device from the junction box into one of these charms and the I/O module at the top links it to and fro the main processor. Saves a lot of marshaling wiring. If this is so, field wiring does not wait for engineering to complete – the solution provided sends the charm cabinet offshore upfront for field termination work.